11620647 has 12 divisors (see below), whose sum is σ = 17669080. Its totient is φ = 7339248.

The previous prime is 11620643. The next prime is 11620649. The reversal of 11620647 is 74602611.

11620647 is a `hidden beast` number, since 1 + 16 + 2 + 0 + 647 = 666.

It is not a de Polignac number, because 11620647 - 2² = 11620643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11620647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11620643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33808 + ... + 34149.

Almost surely, 2^11620647 is an apocalyptic number.

11620647 is a deficient number, since it is larger than the sum of its proper divisors (6048433).

11620647 is a wasteful number, since it uses less digits than its factorization.

11620647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67982 (or 67979 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 11620647 is about 3408.9070095853. The cubic root of 11620647 is about 226.5044660903.

The spelling of 11620647 in words is "eleven million, six hundred twenty thousand, six hundred forty-seven".